IE and Firefox not connecting to proxy server?

Ok, I volunteered to look at a girlfriends computer when she stated that she was having problems connecting to the internet. She was (and still is) having to go through her sons user account to sign on to any form of internet. She can't use her user account for anything. At first I thought it may be because of viruses, so I up loaded and successfully installed Super Anti Spy Software, Malewarebytes, and Avast on her computer. Was able to remove 600+ viruses and cookies. Also deleted a lot of unwanted security software and various other AdWare programs using CM Disc Cleaner. However, now I'm having problems locating a Proxy Server. She has Firefox, IE, Opera installed. Firefox and IE wont connect and Opera is minimal usage before it freezes. Please HELP!!!:confused

 

Figured out the problem. Started messing with the tools options and was able to find the proxy settings and fix the problem.